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Metatomix Names Jeff Dickerson as President and CEO and John Landry to Board of Directors

WALTHAM, MA -- (MARKET WIRE) -- March 20, 2007 -- Metatomix, Inc., a leading provider of
integrated justice solutions to state and local governments, today
announced two key additions to the executive team. Effective immediately,
Jeff Dickerson has been appointed as president and chief executive officer
and John Landry has joined the board of directors. Previously, Dickerson
was CEO of eCredit, which was acquired by Fidelity Ventures in 2006. Landry
is a highly regarded serial entrepreneur, who has served as a technology
executive with leading firms including IBM, Lotus Development, Dun &
Bradstreet, Cullinet Software and McCormack & Dodge.

"The addition of two such prominent executives to our team is a real
endorsement of the market opportunity for Metatomix," said Wayne Boulais,
Metatomix chairman and Apex Venture Partners general partner. "Having
worked with Jeff in previous positions, I know that Metatomix will benefit
from his intense focus on customers and their success. And John Landry's
experience as a technologist is unparalleled. He's a tremendous addition to
our team."

"Metatomix has established a successful track record of using semantic
technology to solve real-world customer problems in key markets including
integrated justice and financial services," said Dickerson. "I look forward
to working with our existing customers to expand on that success, and to
widening our focus to bring the same success to customers in markets such
as healthcare, life sciences and others."

"From the moment I began analyzing it, Metatomix's semantic services
technology has impressed me as being both technically solid and practically
applicable," said Landry. "I look forward to working with the company to
actualize the enormous potential for this solution across a wide range of
markets and industries."

"Jeff and John bring great technology, sales and management experience to
the Metatomix team," said Shamez Kanji, Metatomix board member and general
partner, North Hill Ventures. "With these appointments, I'm confident that
the leadership team can help accelerate the company's growth."

Dickerson brings to Metatomix more than 20 years of executive experience at
various technology companies. In addition to his experience as CEO of
eCredit, a provider of credit risk management and collections software,
Dickerson was previously the senior vice president of worldwide sales and
services at MCK Communications, where he expanded revenue from $2 million
in 1997 to $50 million in 2001, setting the foundation for a successful
public offering in 1999. He was also vice president of client/server sales
at Vmark Software. Dickerson also held management positions at Prime
Computer and Parametric Technologies.

With 25 years of experience building software and software companies,
Landry manages Lead Dog Ventures, a disruptive new-age business
accelerator, providing emerging technology enterprises access to a well
developed network of intellectual, relationship and financial capital.
Landry currently serves as Chairman and CTO of one of Lead Dog's largest
investments, Adesso Systems, where he led the design and development of
Adesso's revolutionary distributed applications platform. Additionally,
Landry has served as chairman of various companies including Agility
Systems, Narrative Communications, Anyday.com and Adjoin Solutions.

For additional information or to arrange an interview with either Jeff
Dickerson or John Landry, please contact Tim Perkins
(tperkins@metatomix.com, 781-907-6722) or Meghan Doherty at CHEN PR
(mdoherty@chenpr.com, 781-672-3147).

About Metatomix, Inc.

Founded in 2000, Metatomix (www.metatomix.com) is the leading provider of
semantic customer data integration (CDI) solutions to law enforcement,
courts, financial services and other customers. Metatomix solutions
intelligently link customer data from existing disparate systems to create
a common semantic understanding of customers across the enterprise. Using
this contextual understanding, Metatomix solutions enable real-time
analysis and insights, orchestrating coordinated responses amongst existing
systems to optimized customer response and relationships. For more
information, visit the Metatomix Web site at http://www.metatomix.com.

Metatomix is a trademark of Metatomix, Inc. Other brand names or product
names are trademarks or registered trademarks of their respective owners.